[PREMIUM MATERIAL]- Our resealable mylar bags are made of polyethylene, aluminum foil and mylar, it has tear resistance and durability. [HOLOGRAPHIC RAINBOW COLOR]- Our foil zipper closure bags come with holographic rainbow color in the back and transparent in the front in order to display the product clearly. When displayed indoors, you don't need to have lots of lighting to see the beautiful rainbow color. [EASY TO USE]- Our smell proof bags are resealable that you can repeat open the zipper, the sealing strip is very tight and don't broken. Usage recommendation: Pinch both sides of the bag opening with your thumb and index finger, and open the bag with both hands.Thumbs are close to the zipper, and both hands forcefully open it. [WIDE USES]- Our holographic bags is waterproof after seal, good to store coffee, candy, sugar, rice, baking, cookie, nuts, dried fruit and flowers, snack, party favor and so on. It is also suitable for small business to package jewelry, eyelash,lip gloss, key chain, cosmetics, soap, electronic accessory or any small objects. [SIZE & QUANTITY]- Measuring 3 inches by 4.7 inches, 300 pieces of resealable holographic bags in the package, enough for your daily use.Please note that the actual color may appear in a slight difference under different light,angle and screen. Colour: blue Material: aluminum foil + polyester film Package Contents: 300 * Smell Proof Mylar Bags